Quran 9:124 from Surah At-Tawba on Divine Marvels.
وَإِذَا مَآ أُنزِلَتۡ سُورَةٞ فَمِنۡهُم مَّن يَقُولُ أَيُّكُمۡ زَادَتۡهُ هَٰذِهِۦٓ إِيمَٰنٗاۚ فَأَمَّا ٱلَّذِينَ ءَامَنُواْ فَزَادَتۡهُمۡ إِيمَٰنٗا وَهُمۡ يَسۡتَبۡشِرُونَ
English translation: And whenever And whenever is revealed a Surah among them (are some) who say Which of you (has) increased [it] (by) this (in) faith As for those who believe then it has increased them (in) faith and they rejoice
Transliteration: wa-idha ma unzilat suratun famin'hum man yaqulu ayyukum zadathu hadhihi imanan fa-amma alladhina amanu fazadathum imanan wahum yastabshiruna